eldrichdosal12p5ltu0
eldrichdosal12p5ltu0 eldrichdosal12p5ltu0
  • 14-01-2020
  • Mathematics
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I need help on this math question?​

I need help on this math question class=

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folarin7
folarin7 folarin7
  • 14-01-2020

Answer: D

Step-by-step explanation:

From the equation given ,  ( -3)⁰(2x⁻¹y⁻¹)²

Recall :From the laws of indicies,

x⁰  = 1  ,and (xᵃ)ᵇ = xᵃ ˣ ᵇ = xᵃᵇ. and x⁻¹ = 1/ₓ

Therefore,

(-3)⁰ = 1,

( 2x⁻¹y⁻1 )² = 2²x⁻¹ ˣ ²y⁻¹ x ²

                = 2²x⁻²y⁻²

                =4x⁻²y⁻²

Now going by the law above, the expression will be

                =4/ₓ²y²

So the answer is D

               

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